Filter Assembly - Teledyne 440 System Manual

There have been reports of pressure building up within the Sub-sea units if water
has been able to seep into the housing. Caution must be taken when opening the
SEP unit.
When opening the sub-sea housing Teledyne TSS recommend that you use
screws inserted into the drilled holes to jack the endcap off. Under no circum-
stances should a screwdriver (or similar) be used to lever the endcap off as this
will result in damage to the o-ring seal and the casing.

9.1.1.2 Filter Assembly

(See drawing 400654 in
The output from a switched-mode power supply is inherently noisy. To prevent this electrical noise from
disturbing the sensitive analogue circuits within the SEP, all outputs from the PSU pass through a -
filter network. The filters are contained within a metal screening can with inputs via feed-through
capacitors.
DPN 402196 Issue 4.1
Chapter 10 "System Drawings")
© Teledyne TSS
NOTE
9 – Maintenance
9- 3